Corrugated-sheet-metal car end



mssms May 29, 1923.

W. P. MURPHY CORRUGATED SHEET METAL CAR END Filed July 17, 1920 OQOQQQQQQQQQQQQQQQQQQQ OQOQ reiterated liiilay 2:9, i923.

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MUR'EHY, 015 NEW N. 22'.

CQREUGATED SHEET-METAL CAR Ehlll arouses-ion filed. m 1?,

To all who m, t ts/icy concern:

Be it known that l, W'Amren P. MURPHY, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful improvement in Corrugated- Sheet'Metal Ear Ends, of which the follow ing is a specification.

This invention relates to improvements in end structure for railway cars and more particularly to corrugated sheet metal ends for freight cars. i

The end of a freight car is subject to very severe shocks and stresses due, among other things, to the tendency, of the cargo to shift when the train stops and starts and to the tendency of the superstructure of the car to Weave. The ends of this type of car have been constructed of one or more sheets or panelsof metal, usually steel, which are formed with corrugations for the purpose of rigidii'ying and strengthening the structure against impacts -from Without and cargo thrusts on the inside and against racking strains due to We ving.

It is the object of this invention to provide a corrugated sheet metal car end, the corrugations of which have such contour as to give maximum strength and which atfords a maximum resistance to the severe shocks and stresses to which the car end structure is necessarily subjected.

lVhile the accompanying drawings illus trate this invention in connection with a certain type of car and form of end, it is not restricted thereto as the essence of the invention lies in the form or shape of the corrugationa'iid may be used on any form of sheet metal end on any type of car.

In the drawing, Figure l, is aview in end elevation of a box car to which this invention has been applied, with parts broken away.

Figure 2, is an enlarged detail vicar in section taken on the line 2-2 of Figure 1.

As shown, the car end is composed of a number of sheets of metal, 1 secured to each other and to the side Walls, end sill and roof framing in the usual manner. Each sheet is formed with a plurality oi parallel corrugations 2 tapering into the body of the sheet at each end.

The particular shape of the corrugation formed in accordancewvith this invention is clearly illustrated in the enlarged detail View of Figure 1920. Serial lie. 397,119.

' The ridges of the corrugations alternate above and below the neutral axis of the plate w th all of the apices of the ridges on plane'pamllelto said axis'and a distance from the axis equal to the distance betweenthe same and the plane of the apices on the opposite side. "lhe centers the alternat ing ridges are equal distances apartv when projected upon the neutral axis. The apex of each ridge is joined: by a web 3 to the apex of the adjacent ridge on the opposite side of the neutral axis. The wehs forming the same side of the neutral axis lying in a 69 the sides of a are continued through Q the apex in the form a curved arch l the crown oi which is on the arc of a circle inorging on each. side into the walls on the arc oil a circle or. considerably smaller radius and from there the walls are straight from the crown one ridge to the crown adjacent alternating ridge,

By this construction the ridges are trusscd to each other by straight Webs of maximum extent which are formed at but a slightangle to the perpendicular from the neutral axis which is a great advantage as the nearer the. web ap roaches the perpendicular the greater the strength of the corrugated plate to resist external forces ing the sides of a ridge being connected by. an arch forms an apex of greater strength than a flat too in. resisting external forhe's and also adds to the strength of the corru- The Webs fornr' 35 gation by increasing the amount of metal greatest distance from the neutral her of forming the corrugations is not limited to pressing and the plate may be :corrugnled in. any desired manner.

l /hat I claim is: I

1. A sheet metal plate for car ends having plurality of parallel corrugations therein with the ridges of the corrugations formed on the of a circle merging on arcs'oi lesser radii into webs connecting the adjacent ridges.

2 A sheet metal plate .ior car ends having plurality of parallelYcorrugatious formed v trussedto each other by fiat webs with the therein, said corruggitions formed on alternate sides of the neutral axis of the plate with theridges oi the corrugations formed on the arcs of circles merging on arcs oi? lesser-radii into webs connecting the adjacent ridges.

3. A sheet metal plate for car ends having a plurality of parallel corrugations formed therein, said corrugations equally spaced apart andialternating on opposite sides of the neutral. axis of the plate with the ridges of the corrugations formed on.

the arc of a circle merging on arcs of lesser radii into webs connecting the adjacent ridges.

4:- A sheet metal plate for car ends having a plurality of parallel corrugations formed therein trussed toeach other by flat Webs with the crown of the ridge formed on the are ofa circle merging into the webs on arcs of lesser radii than that of the crown.

5. A sheet metal plate for car ends having a plurality of parallel corrugations formed therein, ]the ridges of said corrugations extending alternately on OPP Site sides ofthe neutral "axis of the plate and crown or; the ridge formed on the arc "of a circle merging into the webs on..-eic's of lesser radii thanthat of the'citiwn.

6. A sheetinetal plate for car ends -hav-- ing e-plnraiity of equally spaced apart parmemos with stren thenin ribs the sides of which g h a are fiat and the ridges arched and joined to the flat side portions on curves of lesser radii than the radii of the ridges.

8. A sheet metal car wall panel formed with strengthening ribs, the sides of which are flat and sloping and the ridges arched and joined to the fiat sloping side portions on curves of lesser radii than the radii of the ridges. i 9. A sheet metal car wall panel formed with strengthening ribs, the ends of the ribs tapering and merging into the body of the panel the sides or the ribs flat, and the ridges arched and joined to the side portions on curves of lesser radii than the radii of the ridges. l

10. A sheet metal car wall formed with pressed corrugations, the-sides of the corrugations being and joined to the side portions on curves of lesser radii than the radii of the ridges' WALTER P. MURPHY.

flat and the ridgesarched 

